Ink-removing and bleaching compound.



252. COMPOSITIONS,

Hilton, 3

UNITED strA'rEs PATENT OFFICE.

ISABELLA. J. WRIGHT, 0F KALAMAZOO, MICHIGAN.

INK-REMOVING AND BLEACHmG COMPOUND.

No Drawing.

a citizen of the United States, residing at Kalamazoo, Michigan, haveinvented certain new and useful Improvements in Ink-- Removing andBleaching Compounds, of which the following is a specification.

This invention relates to improvements in ink removers.

My improved ink remover is especially designed by me for use inpreparing paper stock from paper having printed matter thereon, such asnewspapers, magazines, books and the like.

The main object of my invention is to provide an improved ink removerfor use in preparing paper stock for paper making which is veryefiicient and not injurous to the stock, and at the same time veryeconomical to use.

A further object is to provide an ink remover which is very efi'ectiveas bleach.

Further objects will definitely appear in the detailed description tofollow. The i11- vention is clearly defined and pointed out in theclaims.

In the preparation of my improved ink remover, I use the followingingredients in Patented May 22, 1917.

Application filed J'une 29, 1916. Serial No. 106,635.

left in the solution until the ink is; freed and may be readily washedout. This ordinarily requires but little time, but the time required forthis step varies not only with the strength of the solution but variesaccording to the different characters of paper and of the ink usedthereon. It is not, 0 however, injurious to the stock to leave it in thesolution longer than is actually re quired for the removal or freeing ofthe ink. The stock is removed from the solution and washed clean oruntil the ink is washed away.

The ink freeing or removing step is facilitated by a beater engine,while the washing step may be effectively carried out by washerscommonly employed in paper mills. After proper washing the stock isready for use and will be found to be clean and white. If desired, thestock may be rinsed with water having gluing therein which will addsomew a o 1 s w 1 eness. 5

My ink removing compound is very efficient and, as stated, leaves thestock clean and well bleached. The ingredients may be considerablyvaried in proportion and satisfactory results still secured. While Ipreferably use kerosene other hydrocarbons about the proportion stated:4 pounds s p; may be substituted with quite satisfactory diu carbonate,variously known commercially as soda ash, sal sg da or washing soda; 3.pound cfirld of lime; 1 gallon kerosene and 6 pounds These ingredientsare thoroughly mixed, water being added to fa cilitate mixing. Inmixing, the sodium carbonate is dissolved in water before mixing thechlorid of lime or the kerosene therewith. Laundry soap is preferredalthough there are various soaps that may be used, and quitesatisfactory results secured. The soap isalso dissolved before mixingwith the other ingredients. The compound or mixture thus prepared isadded to about 1 barrel of water. The proportion of the water, however,may be greatly varied although if the solution is made too weakconsiderably more time is required to free the ink.

The stock to be treated is placed in the solution, preferably heated,although the process can be effectively carried out with cold water.Heating, however, lessens the time required to free the ink. The stockis results.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. An ink remover for paper stock comprising sodium chrbonate, fl:pounds; chlorid of lime, pound; kereosene, 1 gallon; soap, 6 pounds;combined with water substantially as described.

2. A solution for the treatment of paper stock comprising sodiumcarbonate, chlorid of lime, kerosene, soap, and water, combinedsubstantially as specified.

3. A solution for the treatment of paper stock including sodiumcarbonate, chlorid of lime, a hydrocarbon, and water combinedsubstantially as specified.

In witness whereof, I have hereunto set 1 my hand and seal in thepresence of two witnesses.

ISABELLA J. WRIGHT. [L.S.]

Witnesses:

M. L. GLASGOW, M. J. GREGORY.

Copies of this patent may be obtained for in cent: each, by addressingthe "90111111551012! of Iatents, Washington, D. G.

